Yep, it's pretty hard to beat synthetics when it comes to holding up in the heat and humidity. Products like UPP, EX-P, Klasse, Zaino, and others will usually hold up better to those conditions. As EBP said, Meguiar's #16, Collinite, and One Grand Blitz would probably be the best carnauba's under those same conditions.
one more question. UPP suggests that one should "apply Four Star Ultimate Paint Cleanser to remove mild oxidation and embeded dirt and to enhance gloss and shine" straight off descreption on http://www.premiumautocare.com/. That the best one to use or what?
I used AIO and UPP. The results were stunning. I'm hoping to get 4 Star's Ultimate Paint Cleanser for Father's Day. The Ultimate Paint Cleanser is one product that isn't discussed much on this site. I don't know why but it's not.
I would use one or the other. I've read that UPP on the UPC is da bomb! This (UPC) I want to try. I haven't read anything bad about UPC it's just that I haven't read alot about this product. For some reason this product isn't talked up.:dunno
As Rabbi said, I would use one or the other. Having used both under UPP, I prefer UPC. IMO opinion it leaves a deeper, slicker surface ready for the UPP. Not to mention that it was specifically designed to work in conjunction with UPP.
I would bet that UPC is a great product. In fact, its on its way. Up till now, Ive been using Mothers Cleaner (I know, I know, it aint Poorboys) but its been working great for me. Much better than AIO as a matter of fact in terms of being able to clean the paint surface. AIO is great, but dont get it to use as a cleaner.